Having a child may improve a woman’s memory, a new study suggests.
In the study, women who were new mothers scored better on tests of visuospatial memory – the ability to understand and remember information about their surroundings—compared with women who didn’t have children.
The findings contradicts the old belief that women develop“baby brain" or a decline in memory and cognitive(认知的) function, after they have kids, said study researcher Melissa Santiago, a doctoral student at Carlos Albizu University in Miami. “You don’t have to feel that because you have kids, your memory isn’t the same," Santiago said.
The study was small, and the findings will have to be tested in larger groups of people, Santiago said.
Previous studies on the topic have had mixed results—some showed motherhood hurts cognition, and others showed the opposite. Studies on rats show those with pups have better memory than those without offspring.
Santiago analyzed information from 35 first-time mothers whose children were ages 10 to 24 months, and 35 women who had never been pregnant. Both groups scored similarly on intelligence tests. The average age of mothers was 29 and the average age of never-pregnant women was 27.
To test visuospatial memory, the women were shown a paper containing six symbols for 10 seconds, and then asked to draw what they remembered. This task was repeated several times. The first time women were shown the paper, both groups remembered about the same amount. But on the second and third pass, mothers performed better than those without children, indicating that the mothers collected more information each time than the other women.
Later, the women were shown a variety of different symbols, and asked to remember which ones were presented on the earlier task. Mothers did not make a mistake in this task—they remembered every symbol correctly—but those without children made one or two errors, Santiago said.
【小题1】 How did Santiago lead to the findings?
| A．By observation. | B．By comparison. |
| C．By analyzing intelligence tests. | D．By asking women questions. |
| A．The study received little attention. |
| B．The study has just started. |
| C．The study was carried out among a small group of people. |
| D．A small group of researchers were involved in the study. |
| A．Ways to test visuospatial memory. |
| B．Why having kids improves memory. |
| C．How young mothers are different from never-pregnant women. |
| D．The negative effects that worries of women without children have. |
| A．may cause a heated discussion among parents |
| B．may cause an increase in the birth rate |
| C．are tested by previous similar studies |
| D．are encouraging news for mothers |
【小题1】B
【小题2】C
【小题3】A
【小题4】D
解析试题分析：研究人员Santiago通过对比试验表明，有孩子的妈妈和没有孩子的女性比起来，视觉空间的记忆力不会减少而且会增强。
【小题1】推理题：从第五段的句子：可知Santiago 做研究的时候是将第一次做妈妈的妇女和从未做过妈妈的妇女做比较，所以是通过对比得出发现的，选B
【小题2】细节题：从第四段的句子：The study was small, and the findings will have to be tested in larger groups of people, Santiago said. 可知Santiago说这个实验很小，需要在更大的群体中做研究。选C。
【小题3】细节题：从第二段的句子：In the study, women who were new mothers scored better on tests of visuospatial memory – the ability to understand and remember information about their surroundings可知在这篇文章中讨论是检验视觉空间记忆力的方法，选A
【小题4】推理题：从第三段的句子：“You don’t have to feel that because you have kids, your memory isn’t the same," Santiago said.可知这项研究对有孩子的妈妈来说，因为有了孩子记忆力增加，是个好消息。选D。
考点：考查科普类短文
挑战100单元检测试卷系列答案科目：高中英语 来源： 题型：阅读理解
(2013·高考安徽卷，B)Using too much water or throwingrubbish into our rivers are clear ways that humans can put our water supply in danger，but we also affect our water supply in less obvious ways.You may wonder how paving(铺砌) a road can lead to less useable fresh water.A major part of the water we use every day is groundwater.Groundwater does not come from lakes or rivers.It comes from underground.The more roads and parking lots we pave，the less water can flow into the ground to become groundwater.
Human activity is not responsible for all water shortages(短缺)．Drier climates are of course more likely to have droughts(干旱) than areas with more rainfall，but in any case，good management can help to make sure there is enough water to meet our basic needs.
Thinking about the way we use water every day can make a big difference，too.In the United States，a family of four can use 1.5 tons of water a day! This shows how much we depend on water to live，but there’s a lot we can do to lower the number.
You can take steps to save water in your home.To start with，use the same glass for your drinking water all day.Wash it only once a day.Run your dishwasher (洗碗机)only when it is full.Help your parents fix any leaks in your home.You can even help to keep our water supply clean by recycling batteries instead of throwing them away.
【小题1】Which of the following is most likely to lead to less groundwater?
| A．Using river water. |
| B．Throwing batteries away. |
| C．Paving parking lots. |
| D．Throwing rubbish into lakes. |
| A．All water shortages are due to human behavior. |
| B．It takes a lot of effort to meet our water needs. |
| C．There is much we can do to reduce family size. |
| D．The average family in America makes proper use of water. |
| A．show us how to fix leaks at home |
| B．tell us how to run a dishwasher |
| C．prove what drinking glass is best for us |
| D．suggest what we do to save water at home |
| A．Why paving roads reduces our water |
| B．how much we depend on water to live |
| C．why droughts occur more in dry climates |
| D．how human activity affects our water supply |
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科目：高中英语 来源： 题型：阅读理解
Monkeys prefer heavy metal to classical music, according to researchers at the University of Wisconsin whose findings are published this week in Biology Letters.
Scientists played a selection of music to a group of South American cotton-top monkeys but the only sound that got a reaction were from the heavy metal band Metallica. They were seemingly disinterested in Led Zeppelin, Miles Davis and Bach, but after the beautiful sound of Master of Puppets by Metallica was played the monkeys calmed down.
"Monkeys interpret rising and falling sounds differently than humans. Oddly, their only response to several samples of human music was a calming response to the heavy-metal band Metallica," said Professor Charles Snowdon, from the University of Wisconsin-Madison.
Rather than making them excited or aggressive, the heavy metal tracks had a comforting effect. Dr Snowdon, who teamed up with National Symphony Orchestra musican David Teie, also played the monkeys music composed specifically for them. Although they enjoyed Metallica, they were much more interested in these pieces.
A melody(乐曲) based on the short calls of scared monkeys led to anxiety levels rapidly growing, researchers found, while one based on long calls the creatures make when they are happy had a calming effect.
Frans B.M. de Waal, a professor of psychology at Emory University who studies animals, said the findings appear to say more about how monkeys respond to the sounds they make than they do about music or the evolution of music.
Dr Snowdon no longer has a monkey colony to use in his research, but he said his co-author David Teie is exploring the concept of music for cats.
"If we understand how we can affect their emotional states through using musical sound and aspects of our speech, maybe those of us living with companion animals can have a better relationship with them, too," Snowdon said.
【小题1】The research mentioned in the passage is mainly about ______.
| A．the change of music over time | B．animals’ response to music |
| C．special music for animals | D．the origin of music |
| A．looked anxious | B．became restless |
| C．felt at ease | D．made long calls |
| A．of Led Zeppelin | B．of Miles Davis |
| C．of Metallica | D．specially composed for them |
| A．build better ties between animals and humans |
| B．compare monkeys and cats in term of music |
| C．develop new music based on animals’ calls |
| D．find better ways to keep animals under control |
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科目：高中英语 来源： 题型：阅读理解
The relationship between humans and animals has always been complex. Some cultures have developed entire belief systems around favored animals. Even in cultures with less formal belief systems, connections between people and animals still lead to commonly accepted opinions about animals.
These belief systems usually develop around the animals that interact (互动) with humans most frequently. Therefore, it should not be surprising that so many stories surround the most common of animals: rats. Rats live side by side with humans all over the world and regularly interact with people. Human-rat coexistence may be common all around the world, but different cultures respond to that closeness in different ways.
In the United States and Europe, one typical attitude is that the rat is a pest. This could be due to the common belief that rats spread disease. Actually, they don’t, at least not directly, but many people don’t know that. The Pied Piper of Hamlin, a well-known children’s story, is one example of how rats have been described in Western literature: in that story, rats cause such a problem that a town has to hire a piper to call them all away.
In many Latin American countries, the rat is described in a very different way. The story of the tooth fairy (a fairy believed by children to leave money while they sleep in exchange for a tooth that has come out) is common all over the world, but in Latin America, the “fairy” is a rat! Rats do have very strong teeth, which could explain the association. Clearly, this shows another attitude toward rats that is much more positive.
Yet another attitude toward the rat can be seen in the Chinese Zodiac (生肖). The Rat is one of the animals of the Zodiac. Like the other zodiac animals, the Rat is neither entirely good nor entirely bad. It’s described as clever and friendly, but also tricky and not entirely honest. That may be the most accurate description of the rat so far. Whether you like rats or not, it’s hard to deny their reputation for cleverness.
As many people are discovering these days, rats can even make excellent pets, so long as you remember to close the cage carefully!
【小题1】What does the passage mainly talk about?
| A．A trend of keeping rats as pets. |
| B．How different cultures look at rats. |
| C．How humans get along with animals. |
| D．Favored animals in different cultures. |
| A．unpleasant | B．honest | C．smart | D．unusual |
| A．the tooth fairy is lovely |
| B．rats look very frightening |
| C．rats are welcome in Latin American countries |
| D．the story of the tooth fairy is common all over the world |
| A．don’t spread disease |
| B．should be treated as pests |
| C．are fairly described in the Chinese Zodiac |
| D．are kept as pets by more and more people |
| A．travel guide | B．news report | C．nature magazine | D．history textbook |
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科目：高中英语 来源： 题型：阅读理解
US military is attempting to develop a new style “insect robot” to replace the human soldier to go wherever he can’t. The greatest trouble this project has fallen across is how to enable the robot to fly freely like an insect， said an official of the Pentagon(五角大楼).
The Pentagon is seeking for the cooperation with scientists in hope of developing a new technique by which people can control the insect’s flight direction and pass on the information its eyes or other organs catch through the equipment set in its body， the official said.
It is thus designed that a tiny controlling chip will be equipped in an insect’s body when it is in chrysalis(蛹). As the insect grows， the cut made when fixing in the chip will be recovered. The chip will exist in forever. Scientists believe this won’t influence the insect， sound growth or the functions of internal organs.
The terminal target of the project is to set up a global system， in which the insect robots will be stationed in all parts of the world and stick to their posts till a new instruction is received. At that time the military can receive from all over the world clear image information within about 5 meters of the insects and that of a special target within 100 meters.
Years ago， Defense Advanced Research Projects Agency of US DOD(国防部) spent $3,000,000 carrying out a plan for training bees to detect landmines. But， no new progress has so far been made.
“According to the scientists， there is still enormous difficulty in technology in turning it into reality， such as the insects reproduction(繁殖)， their adaptation to the surroundings and temperature and so on. However， this project is really challenging. If successful， it is equal to making countless small drone(无人机)，”said the official of DOD.
【小题1】According to the description of the passage， what is an insect robot like？
| A．An insect made of a certain metal. |
| B．A robot looking like an insect. |
| C．An insect with a chip in its body. |
| D．A tiny flying robot. |
| A．There must be a controlling chip well connected with the insect’s brain. |
| B．The insect’s eyes and other organs must be replaced by some special equipment. |
| C．All the insect’s concerned organs must be controlled by a chip. |
| D．The insect must be so well trained as to make full use of its organs. |
| A．have a clear picture of almost every part of the world |
| B．have insect robots from all over the world |
| C．see clearly the things within 10 to 100 meters |
| D．get many insects which obey their orders |
| A．They can’t keep sound growth of the insects. |
| B．They can’t ensure the insects to produce their young. |
| C．They can’t fix a chip in an insect. |
| D．They can’t make sure the internal organs function well. |
| A．Leading. | B．Vital. | C．Moral. | D．Final. |
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科目：高中英语 来源： 题型：阅读理解
“If you want to see a thing well, reach out and touch it!”
That may seem a strange thing to say. But touching things can help you to see them better.
Your eyes can tell you that a glass ball is round. But by holding it in your hands, you can feel how smooth and cool the ball is. You can feel how heavy the glass is. When you feel all these about the ball, you really see it. With your skin, you can feel better. For example, your fingers can tell the difference between two coins in your pocket. You can feel a little drop of water on the back of your hand, too. You can even feel sounds against your skin. Have you ever wanted to know why some people like very loud music? They must like to feel the sounds of music.
All children soon learn what “Don't touch!”means. They hear it often. Yet most of us keep on touching things as we grow up. In shops, we touch things we might buy: food, clothes. To see something well, we have to touch it. The bottoms of our feet can feel things, too. You know this when you walk on warm sand, cool grass or a hard floor. All feel different under your feet.
There are ways of learning to see well by feeling. One way is to close your eyes and try to feel everything that is touching your skin. Feel the shoes on your feet, the clothes on your body, the air on your skin. At first, it is not easy to feel these things. You are too used to them!
Most museums are just for looking. But today some museums have some things to touch. Their signs say, “Do touch!” There you can feel everything on show.
If you want to see better, reach out and touch. Then you will really see!
【小题1】By touching things, .
| A．you will have a strange feeling |
| B．you will learn how to reach out your hand |
| C．you can learn more about them |
| D．you can tell what colors they really are |
| A．Touching by Feeling | B．To See or to Feel |
| C．To See Better—Feel | D．Ways of Feeling |
| A．Your fingers. | B．Your eyes. | C．Your skin. | D．Your back. |
| A．Sounds. | B．Darkness. | C．Water. | D．Coins. |
| A．Touching is helping us to see better. |
| B．Our skips may help us enjoy music. |
| C．People don't have to learn to feel. |
| D．Visitors can't feel the things on show in any museums. |
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科目：高中英语 来源： 题型：阅读理解
A funny thing happened on the way to the communications revolution: we stopped talking to one another.
I was walking in the park with a friend recently, and his cell phone rang, interrupting our conversation. There we were walking and talking on a beautiful sunny day and... I became invisible, absent from the conversation. The telephone used to connect you to the absent. Now it makes people sitting next to you feel absent. Why is it that the more connected we get, the more disconnected I feel? Every advance in communications technology is a tragedy to the closeness of human interaction（互动）. With email and instant messaging over the internet, we can now communicate without seeing or talking to one another. With voice mail, you can conduct entire conversations without ever reaching anyone. If my mom has a question, I just leave the answer on her machine.
As almost every contact we can imagine between human beings gets automated（自动化）, the alienation index（疏远指数） goes up. You can't even call a person to get the phone number of another person any more. Directory assistance is almost always fully automated.
I am not against modern technology. I own a cell phone, an ATM card, a voice mail system, and an email account. Giving them up isn't wise... they're a great help to us. It's some of their possible consequences that make me feel uneasy.
More and more. I find myself hiding behind email to do a job meant for conversation. Or being relieved that voice mail picked up because I didn't really have time to talk. The industry devoted to helping me keep in touch is making me lonelier ...or at least facilitating my antisocial instincts.
So I've put myself on technology restriction: no instant messaging with people who live near me, no cell phoning in the presence of friends, no letting the voice mail pick up when I'm at home.
【小题1】Which of the following would be the best title of the passage?
| A．The Advance of Communications Technology |
| B．The Consequences of modern Technology |
| C．The Story of Communications Revolution |
| D．The Automation of Modern Communications |
| A．the people sitting beside you have to go away to receive a phone call |
| B．you can hardly get in touch with the people sitting beside you |
| C．modern technology makes it hard for people to have a face-to-face talk |
| D．people can now go to work without going to the office |
| A．satisfying | B．encouraging | C．disappointing | D．embarrassing |
| A．modern technology is bridging the people |
| B．modern technology is separating the people |
| C．modern technology is developing too fast |
| D．modern technology is interrupting our communication |
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科目：高中英语 来源： 题型：阅读理解
A farm planted levels or floors is called a vertical(垂直的)farm. A skyscraper type building can house a vertical farm. Since the garden is built upwards，rather than outwards，it requires much less space than a conventional farm.
The world is quickly running out of room for conventional farming. Vertical farms could be a key to this situation. An 18story vertical farm could feed as many as 50,000 people，all in an area which is the size of the average city block. Vertical farms in the city could cut down on transportation costs as well. Think about the amount of fuel it takes to transport food from farmland to city. The resources saved would be surprising. Besides saving travel time，food would be delivered in fresher condition and with less damage.
There is a growing concern about the use of pesticides(杀虫剂) in agriculture today. But the vertical farm would be a greenhouse type environment, avoiding the need for a large number of pesticides. Vertical farms can be built in a contained space，therefore they are an excellent solution for living well in an environment far different from our own. Hydroponics(水耕法) could be a big part of vertical gardening. This would reduce the amount of soil needed to grow food. Of course，not all food does well with this type of planting，but there are many crops that actually seem to do better.
In some climates，a lack of sunlight creates a short growing season. The solar power option may not work as well here. The addition of grow lights would make it possible to grow crops in vertical gardens in these areas .In other words，we could grow crops in areas where we never could before.
Vertical farms may just be a concept for now，but they are a concept that will solve many of our problems in the future.
【小题1】According to the passage, a vertical farm ________.
| A．is mainly built outwards |
| B．is dependent on solar power |
| C．is planted on levels upwards |
| D．is only an environmental friendly farm |
| A．depend far less on sunlight |
| B．greatly increase the use of soil |
| C．help to protect the limited gardens |
| D．reduce the harmful effect of pesticides |
| A．have already been put into use |
| B．only use hydroponics to grow food |
| C．need less room than conventional farms |
| D．may increase the transportation costs |
| A．Vertical farms for our future |
| B．Ways to deal with future problems |
| C．Vertical farms and green skyscrapers |
| D．Making full use of our limited land |
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科目：高中英语 来源： 题型：阅读理解
BEIJING—As China scrambles to respond to the choking smog that has blanketed Beijing in recent weeks, authorities in several major cities are experimenting with carbon trading platforms. The schemes are one effort to get control over greenhouse gases in an economy still hungry for cheap energy.
It has been a persistent concern in recent years, but the spiking pollution levels in January are sparking a public outcry.
Emissions from coal-fired electricity plants and busy factories are part of the problem that officials hope to get control over through carbon trading platforms. Seven cities are expected to open carbon markets later this year, including Tianjin.
“The government has decided to start with programs because the carbon trading is something new to China,” said David Tang, secretary of the board of the Tianjin Carbon Exchange. “So we want to have a number of programs to explore the use of the market.” said Tang.
China wants to launch a national carbon trading program by 2016. If it is successful, analysts say, the program would be one of the largest in the world and would help the country meet its target of cutting carbon dioxide emissions by 45 percent within seven years.
The platforms allow companies to earn credits for lowering greenhouse gas emissions, which can then be traded. If it works, it would encourage for-profit businesses to invest in green technology.
As public concern builds pressure for the government to find a solution, Wu Changhua, greater China director of the Climate Group, says there is a broad shift under way in how Chinese weigh their quality of life.
China has long put economic growth ahead of environmental concerns, making it the world’s biggest polluter. Carbon trading supporters hope that the markets could be one way to curb pollution and keep the economy growing.
【小题1】Which of the following is TRUE about carbon trading platforms?
| A．They are used to trade various resources. |
| B．They caused the choking smog in China. |
| C．They have been in existence for many years in China. |
| D．The choking smog may promote their development. |
| A．to make blanket | B．to cover something | C．to make something empty | D．to be like a blanket |
| A．unknown | B．indifferent | C．optimistic | D．pessimistic |
| A．China will have built a national carbon trading program by 2016. |
| B．Chinese have lived a life of high quality in all aspects. |
| C．The markets could slow the development of economy. |
| D．Standards of life will be changed in China. |
| A．The choking smoke in China. | B．The urge for carbon trading platforms. |
| C．Greenhouse gases. | D．The world’s biggest polluter. |
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